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Physical Education - The principle of individual differences
The principle of individual differences
Last but not least on the list of training principles is the principle of
individual differences.
We all start somewhere ... different.
It is usually practical to describe physical characteristics based on some
_average_. On average, Australian men are currently 5' 9" (1.75m) tall and
about 77kg. But walk down a busy street and you will see that there is
considerable variability! It should not be too surprising that there is
also a lot of variability in our internal characteristics.
Heart size, muscle mass, bone diameter, fibre type composition, position
of muscle attachments on bone, fat distribution pattern, joint flexibility,
etc., all vary from individual to individual. Two examples: On average, a
25-year-old untrained man will have a maximal oxygen consumption [1] of 45
ml/min/kg. However, there are completely untrained people who have walked
into a lab, gotten on a treadmill and had a VO2 max. of 70 ml/min/kg. I
tested a girl exactly like this myself once. I was teaching a class of Year
12 Physical Education students, and everyone was completing the 20m beep
test for aerobic capacity [2]. I predicted her max. for the class based on
her exercise history (little, and she smoked!). Imagine my surprise when
she got to level 11 on the test (I predicted VO2 around 48 ml/min/kg). And
this girl had never done any real exercise!
There are equally "healthy" untrained young women whose max. is only 27
ml/min/kg. That is nearly a 100% difference in aerobic capacity before they
do the first workout! This is a physiological gap that will not be closed,
no matter how hard the "less endowed" classmates train. If the high VO2
girl were to train very hard, she might reach 60-65 ml/kg/min, a 15%
increase. The low VO2 girls can train equally hard and possibly reach 40
ml/kg/min, a larger 50% increase. The gap can narrow, but it will not go
away. Genetics place limitations on our body.
Example number two: On average, the fibre type distribution in the thigh
muscles is roughly 50% slow and 50% fast fibres. However, in a study by
Simoneau et al, 1989, muscle biopsies from the vastus lateralis (outside
thigh) of 418 males and females revealed a range of from 15% slow fibres to
85% slow fibres in different people. Coefficients of variation approached
30%. Again we see that there is considerable genetic variation in a
variable that has significant impact on performance. So, we each have to
focus on approaching the outer boundaries of OUR OWN physical potential.
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Links:
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[1] http://alison.com/#
[2] http://alison.com/#
The Individualization Principle dictates that sports training should be adjusted according to each athlete's characteristics and needs, such as age, gender, rate of progress, and previous experience. The goal of individualization is to capitalize on each athlete's strengths, exploit their genetic potential, and strengthen their weaknesses. Training program revisions for individual athletes can come in many forms. Adjustments can be made to for skill level (see Individual Differences), size, medical conditions, injuries, motivational level, or other natural assets. While personal attention is time consuming, it can speed up an athlete's training progress. 1. Set Clear Goals. Goals set for team results can be personalized according to position and athletes' abilities. 2. Test. Getting your baseline measures and evaluating results is the most precise way to apply this principle. In addition to fitness and skill testing, health-related tests performed by trainers and other professionals offer implications for how training can be adjusted. 3. Optimize Shortcomings. Devise ways to overcome weaknesses as much as possible. For example, for athletes with low motivation, set specific goals and reward progress. For those who are naturally move slowly for whatever reasons, overload speed-related activities. 4. Gender Differences. Be sensitive to physical as well as cultural differences. Women have wider hips, a lower center of gravity, and carry more fat in these areas than do men. Training tasks may need to be adjusted for these physical differences. Encourage and support girls and women equally with boys and men, particularly when a sport is more accepted for one gender. 5. Positive-negative-positive. When offering coaching feedback, reinforce the good points, and also point out areas for improvement. This is especially helpful when an athlete has difficulty, whether on a given day or consistently due to personal weaknesses, positive reinforcement encourages him/her to persist. 6. Senior Athletes. Older adults may need specific attention compared to younger athletes. Coaches should be sensitive to decreased flexibility, postural deviations, body composition, and other orthopedically-related factors. Adults prefer to be active participants in developing training programs. 7. Youth Athletes. Competitive youth sports subject children to many opportunities, as well as many physical and psychological vulnerabilities. Positive early experiences marked with success can lead the way to healthy lifetime habits. Coaches and parents should be accommodate such factors as stage of learning, level of perceptual-motor development, and fitness level and capabilities. Children need acceptance and encouragement whether they win or lose.
What is the principle of individual differences?
The principle of individual differences:- Last but not least on the list of training principles is the principle of individual differences. We all start somewhere ... different. Heart size, muscle mass, bone diameter, fibre type composition, position of muscle attachments on bone, fat distribution pattern, joint flexibility, etc., all vary from individual to individual. Two examples: On average, a 25-year-old untrained man will have a maximal oxygen consumption of 45 ml/min/kg. There are equally "healthy" untrained young women whose max. is only 27 ml/min/kg. That is nearly a 100% difference in aerobic capacity before they do the first workout! This is a physiological gap that will not be closed, no matter how hard the "less endowed" classmates train. If the high VO2 girl were to train very hard, she might reach 60-65 ml/kg/min, a 15% increase. The low VO2 girls can train equally hard and possibly reach 40 ml/kg/min, a larger 50% increase. The gap can narrow, but it will not go away. Genetics place limitations on our body.
What is the principle of individual differences?